2.14 Browse Foreign Server

You will be queried for a select method and a server name. Gnus will
then attempt to contact this server and let you browse the groups there
(gnus-group-browse-foreign-server).

A new buffer with a list of available groups will appear. This buffer
will use the gnus-browse-mode. This buffer looks a bit (well,
a lot) like a normal group buffer.

Here's a list of keystrokes available in the browse mode:

n

Go to the next group (gnus-group-next-group).

p

Go to the previous group (gnus-group-prev-group).

SPACE

Enter the current group and display the first article
(gnus-browse-read-group).

RET

Enter the current group (gnus-browse-select-group).

u

Unsubscribe to the current group, or, as will be the case here,
subscribe to it (gnus-browse-unsubscribe-current-group). You
can affect the way the new group is entered into the Group buffer
using the variable gnus-browse-subscribe-newsgroup-method. See
see Subscription Methods for available options.

l

q

Exit browse mode (gnus-browse-exit).

d

Describe the current group (gnus-browse-describe-group).

?

Describe browse mode briefly (well, there's not much to describe, is
there) (gnus-browse-describe-briefly).

DEL

This function will delete the current group
(gnus-browse-delete-group). If given a prefix, this function
will actually delete all the articles in the group, and forcibly
remove the group itself from the face of the Earth. Use a prefix only
if you are absolutely sure of what you are doing.